Apple IIgs RAM disk
Jim Pittman
I don't know why the following appeared in comp.sys.apple2...
> > Sounds like you need to increase your memory partition given to
> > netscape. Select your Netscape Icon (one click), then go to
> > Get Info under the file menu... give it 10000-12000 K of memory.
> > That should fix your problem.
>
> I'd recommend, if you can stand the loss of carryover cache, that you
> use a RAM Disk for your netscape cache. It has spared me all netscape
> crashes. netscape can screw up the HFS on your disk, causing problems.
... but it prompts me to say that I have discovered RAM5 on my IIgs
and it's great! I never had a permanent RAM disk before (did not want
to deprive GraphicWriter III of any precious memory, don't you know)
but when I added 2 more megabytes to the 4-meg CV-RAM card on my ROM 3
I started getting what appeared to be DMA problems, even though my
SCSI card is a RamFAST.
I thought I'd set up a RAM disk to prevent the DMA problems, and now I
think I'm addicted to always having a permanent RAM disk!
So I recommend to everybody that they get an 8-meg card from Sequential
or Alltech and make the memory above 4 megs a permanent RAM disk.
If I understand the mysteries of DMA correctly, a ROM 01 can have an
8-meg card with 4-megs devoted to a RAM disk (leaving 4-meg of DMA-
capable memory for programs to play with) and a ROM 3 can have a 7-meg
card with 3-meg for a RAM disk (leaving 5-meg of DMA-capable memory
for programs to play with). Is this correct, DMA gurus? Can a ROM 3
machine have an 8-meg card and devote 4-meg to a RAM disk?
(By the way, Swatterdisk is great for quickie temporary RAM disks.)
My ][ cents. - Jim Pittman - AppleQuerque Computer Club - ca...@unm.edu
stephen e buggie
I already have a 4 meg card in the RAM slot of my IIgs, and one meg on
the Rom 3 motherboard.
WHAT THE APPLE WORLD NEEDS NOW is a 4 meg slot 1-7 RAM card, sort of like
RamFactor for the IIe. Does such a card exist, and would its extra
memory be recognized in addition to the 4 megs in the RAM card slot.
Steve Buggie
: If I understand the mysteries of DMA correctly, a ROM 01 can have an
Nathan Mates
In article <5jbav9$h...@lynx.unm.edu>,
stephen e buggie <bug...@musca.unm.edu> wrote:
>WHAT THE APPLE WORLD NEEDS NOW is a 4 meg slot 1-7 RAM card, sort of like
>RamFactor for the IIe. Does such a card exist, and would its extra
>memory be recognized in addition to the 4 megs in the RAM card slot.
The GS has a particular method of accessing memory: all GS memory
is accessible by the processor at any time, in any order. [Well,
excluding times when DMA's going on.] Slot 1-7 ram cards are the
antithesis: memory is accessible one byte at a time in sequential
order, with a speed penalty for getting a byte that is not the 'next'
byte.
There is a very serious and fundamenual difference between these
two types of RAM, and it's not going to be overcome anytime soon. GS
programs are all written to assume that all GS memory is trivially and
immediately accessible (which it is), and would require a major
rewrite to make hacks for the //e work as GS Ram. If you only wanted
to do certain things, such as a ramdisk, that is a feasible use for
a slot 1-7 card.
Blame Apple for being too shortsighted to allow >4MB of GS main RAM
at the same time as DMA, and for crippling the //e's extended memory
access after the far more flexible and usable III model, leading
people to come up with such ungainly hacks as the slot 1-7 RAM cards.
BTW, this information is in section 4.2 of the comp.sys.apple2
Frequently Asked Questions (FAQ) at
http://www.visi.com/~nathan/a2/faq/csa2.html, "Can I add more memory
to my Apple II"
Nathan Mates
--
<*> Nathan Mates http://www.visi.com/~nathan/ <*>
# What are the facts? Again and again and again-- what are the _facts_?
# Shun wishful thinking, avoid opinion, care not what the neighbors
# think-- what are the facts, and to how many decimal places? -R.A. Heinlein
David Empson
stephen e buggie <bug...@musca.unm.edu> wrote:
> I already have a 4 meg card in the RAM slot of my IIgs, and one meg on
> the Rom 3 motherboard.
>
> WHAT THE APPLE WORLD NEEDS NOW is a 4 meg slot 1-7 RAM card, sort of like
> RamFactor for the IIe.
Do you really need a 4 MB RAM disk?
> Does such a card exist
No. The largest standard slot RAM card is the RamFactor, which supports
1 MB. It also supports a 2 MB piggyback card, but I gather they were
very rare, if they were ever available at all.
> and would its extra memory be recognized in addition to the 4 megs
> in the RAM card slot.
Only as a RAM disk, not as normal IIgs RAM - you would simply have 5 MB
of normal RAM plus a 4 MB RAM disk.
--
David Empson
dem...@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand
Edhel Iaur, Esq.
>stephen e buggie <bug...@musca.unm.edu> wrote:
>> WHAT THE APPLE WORLD NEEDS NOW is a 4 meg slot 1-7 RAM card, sort of like
>> RamFactor for the IIe.
>> Does such a card exist
>
>No. The largest standard slot RAM card is the RamFactor, which supports
>1 MB. It also supports a 2 MB piggyback card, but I gather they were
>very rare, if they were ever available at all.
Someone here has the 3MB RAM, I remember. Didn't those RamFactor III
ads offer cards with up to 16MB RAM? ("Price: CALL")
--
| / / />___________________ +==Apple // Forever==+
|___ _____ M#M#M#||___________________---__ +-37th Wisest Wizard-+
| \ \ / #M#M#M||___________________--- +- Edhel Iaur, Esq. -+
| / / \_/ \>
http://www.grin.net/~cturley/USA2WUG/FOUNDING.MEMBERS/HOME.PAGES/EDHEL
***For my correct email address, delete all the capital letters***
Randy Shackelford
In article <5jbav9$h...@lynx.unm.edu>,
stephen e buggie <bug...@musca.unm.edu> wrote:
>I already have a 4 meg card in the RAM slot of my IIgs, and one meg on
>the Rom 3 motherboard.
Me too, plug a 1 mb Apple slinky card in slot 5. Since I don't use any
system memory for RAM disk, I have memory to burn in my ROM 3. The finder
about window says 3.7 mb available.
>WHAT THE APPLE WORLD NEEDS NOW is a 4 meg slot 1-7 RAM card, sort of like
>RamFactor for the IIe. Does such a card exist, and would its extra
>memory be recognized in addition to the 4 megs in the RAM card slot.
AE sold a 4 mb expander for the RAMfactor card, but given the price of
memory when it came out, it's hard to imagine that many were sold. So for
all practical purposes, slinky memory tops out at 1 mb per card. The memory
is only accessible a byte at a time, meaning that code can't run in slinky
memory. That leaves it mainly for RAM disk usage.
--
Randy Shackelford
sh...@frii.com
Randy Shackelford
In article <335b7547...@167.152.149.11>,
Edhel Iaur, Esq. <LOSETHECAPIT...@bigfoot.com> wrote:
>>> Does such a card exist
>>
>>No. The largest standard slot RAM card is the RamFactor, which supports
>>1 MB. It also supports a 2 MB piggyback card, but I gather they were
>>very rare, if they were ever available at all.
>
>Someone here has the 3MB RAM, I remember. Didn't those RamFactor III
>ads offer cards with up to 16MB RAM? ("Price: CALL")
You're confusing RAMfactor with RAMworks. RAMworks is the aux slot card that
provided 80 columns and RGB video along with memory expansion. RAMfactor is
a clone of Apple's slinky card. RAMworks could go to 3 mb and RAMfactor could
go to 5 mb.
--
Randy Shackelford
sh...@frii.com
Ben Reding
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David Empson wrote:
> stephen e buggie <bug...@musca.unm.edu> wrote:
>
> > I already have a 4 meg card in the RAM slot of my IIgs, and one
> meg on
> > the Rom 3 motherboard.
> >
> > WHAT THE APPLE WORLD NEEDS NOW is a 4 meg slot 1-7 RAM card, sort
> of like
> > RamFactor for the IIe.
>
> Do you really need a 4 MB RAM disk?
>
> > Does such a card exist
>
> No. The largest standard slot RAM card is the RamFactor, which
> supports
> 1 MB. It also supports a 2 MB piggyback card, but I gather they
> were
> very rare, if they were ever available at all.
>
> > and would its extra memory be recognized in addition to the 4 megs
>
> > in the RAM card slot.
>
> Only as a RAM disk, not as normal IIgs RAM - you would simply have 5
> MB
> of normal RAM plus a 4 MB RAM disk.
>
> --
> David Empson
> dem...@actrix.gen.nz
> Snail mail: P.O. Box 27-103, Wellington, New Zealand
David,
I installed an Applied Engineering RamKeeper with 8 MB of RAM. The RAM
card hold 6 MB and it supports the original 2 MB RAM as a daughter
board. I partioned the memory with 4 MB RAM for the Apple IIGS
operationg system and 4 MB RAM for a RAM disk. The RAM disk is
maintained when the system is off and has a battery backup.
I installed the entire operating system on the RAM disk and have never
lost any data due to power outages. The system boot in 23 seconds.
Not sure where you can buy a RamKeeper. Applied Engineering sales phone
number is (214) 241-6060 (from 1990 manual).
Ben
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Ben Reding
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David Empson wrote:
David,
Ben
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<HTML><BODY>
David Empson wrote:
<BLOCKQUOTE TYPE=CITE>stephen e buggie <bug...@musca.unm.edu> wrote:
<BR>
<BR><I>> I already have a 4 meg card in the RAM slot of my IIgs, and one meg
on</I>
<BR><I>> the Rom 3 motherboard.</I>
<BR><I>></I>
<BR><I>> WHAT THE APPLE WORLD NEEDS NOW is a 4 meg slot 1-7 RAM card, sort
of like</I>
<BR><I>> RamFactor for the IIe.</I>
<BR>
<BR>Do you really need a 4 MB RAM disk?
<BR>
<BR><I>> Does such a card exist</I>
<BR>
<BR>No. The largest standard slot RAM card is the RamFactor, which supports
<BR>1 MB. It also supports a 2 MB piggyback card, but I gather they were
<BR>very rare, if they were ever available at all.
<BR>
<BR><I>> and would its extra memory be recognized in addition to the 4 megs</I>
<BR><I>> in the RAM card slot.</I>
<BR>
<BR>Only as a RAM disk, not as normal IIgs RAM - you would simply have 5 MB
<BR>of normal RAM plus a 4 MB RAM disk.
<BR>
<BR>--
<BR>David Empson
<BR>dem...@actrix.gen.nz
<BR> Snail mail: P.O. Box 27-103, Wellington, New Zealand
</BLOCKQUOTE>
David,
<BR>
<BR>I installed an Applied Engineering RamKeeper with 8 MB of RAM. The
RAM card hold 6 MB and it supports the original 2 MB RAM as a daughter
board. I partioned the memory with 4 MB RAM for the Apple IIGS operationg
system and 4 MB RAM for a RAM disk. The RAM disk is maintained when
the system is off and has a battery backup.
<BR>
<BR>I installed the entire operating system on the RAM disk and have never
lost any data due to power outages. The system boot in 23 seconds.
<BR>
<BR>Not sure where you can buy a RamKeeper. Applied Engineering sales
phone number is (214) 241-6060 (from 1990 manual).
<BR>
<BR>Ben
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James R. Sassman
Applied Engineering has been out of business for about 3.5 years.
After they installed a 1-900 line for Apple II support, their
business steadily declined. I did use the number a couple of
times--but my employer paid for the call since it was related
to using the computer for work. I doubt that many others wanted
to pay around $ 1.95 per minute--I forget the exact figure, but
recall that one call to them was $ 14 for only a few minutes.
Jim S.
sy...@lost-gonzo.com
J.>Applied Engineering has been out of business for about 3.5 years.
J.>After they installed a 1-900 line for Apple II support, their
J.>business steadily declined. I did use the number a couple of
J.>times--but my employer paid for the call since it was related
J.>to using the computer for work. I doubt that many others wanted
J.>to pay around $ 1.95 per minute--I forget the exact figure, but
J.>recall that one call to them was $ 14 for only a few minutes.
J.>Jim S.
900 numbers were new at the time..i told them that my phone company was
regional..and did not accept calls out on a 900 number unless i paid
them to change my service....and i did not want to face the blue haired
ladies of the local ph. co. telling them that i wanted 900 numbers
re-installed....i'd be branded as a sex fiend...each time i came in to
pay a bill.....
A.E. bought it and gave me a 2nd number to call in on.....needless to
say...that sorta slipped out to the general public....;)
but anyway...they were dead as a company only 3 or so weeks later..so it
hardly mattered....
but i have a theory...that blue haired old ladies really run the
world..i mean they are the only people i see in phone company offices,
or they run the voting booths at all major elections for president on
down, and they terrorize the roadways of america by driving slower then
the garden variety snail....hmmmm.....
brad
sy...@lost-gonzo.com
s